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US4186911A - Jack with translation and rotation movements - Google Patents

Jack with translation and rotation movements Download PDF

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Publication number
US4186911A
US4186911A US05/906,885 US90688578A US4186911A US 4186911 A US4186911 A US 4186911A US 90688578 A US90688578 A US 90688578A US 4186911 A US4186911 A US 4186911A
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US
United States
Prior art keywords
cylinder
rod
bearing
translation
jack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/906,885
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English (en)
Inventor
Jean P. Huet
Alain Courtois
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Individual
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Individual
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Filing date
Publication date
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Publication of US4186911A publication Critical patent/US4186911A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F15B15/063—Actuator having both linear and rotary output, i.e. dual action actuator

Definitions

  • the invention relates to a jack whose rod can be actuated with a translational movement or a rotational movement or with a combination of these two movements.
  • Hydraulic, pneumatic and oleopneumatic jacks and generally jacks with a piston and a pressurizing agent as well as electrical jacks are well known. They include a rod which is mounted in a cylinder and which is driven in translation with respect to the latter. In jacks with a pressurizing agent, the rod is fast to a piston which slides in fluid-tight manner in the cylinder whilst intake and exhaust passages for said agent are formed in the two ends of the cylinder so that the piston can be driven with a translational movement called "rise and fall".
  • a jack has been conceived which is provided with a cylinder and a piston, both having a curvilinear triangular section so that they are fast in rotation whilst the cylinder is rotatably mounted in a support in such a way that it is possible, by means of a suitable device, to rotate the cylinder at will and through this fact, the rod which is fast to the piston.
  • This device has numerous drawbacks. Firstly, its cost price is particularly high, given principally the difficulty of producing a bore of curvilinear triangular cross-section. In addition, a great disadvantage resides in the fact that the machining of the cylinder is limited. In fact, apparatus capable of producing bores of this type is not only onerous, but has technological limitations as to length, which restricts the possibilities since the travel of the rod depends obviously on the length of the cylinder.
  • the invention provides a jack including a rod mounted in a cylinder and driven in translation with respect to the latter by any conventional means, for example hydraulic, pneumatic, oleopneumatic, electrical or magnetic.
  • This jack is remarkable in that the rod is fast in rotation with a bearing in which it is slideably mounted, if necessary in fluid-tight manner, said bearing being mounted in the end of the head of said cylinder or in an element fast to the latter, whilst a rotary drive device is provided to directly or indirectly rotate said bearing so that the rod can be driven at will with a movement of translation or a movement of rotation or with a combination of these two movements.
  • said rod has a substantially polygonal cross-section, preferably curvilinear and substantially oval, whilst the bearing has a bore of conjugate shape.
  • the cylinder can have a circular section, whilst the production of a rod having a polygonal or oval section and of a bearing limited in length, having a conjugate bore, is relatively simple and practically without limitation.
  • the bearing is fast to the end of the head of the cylinder and the cylinder or preferably a member connected to the latter, such as a pinion is mounted rotatably in a base whilst a rotary drive device for the cylinder or said member is provided so that the bearing and hence the rod, can be indirectly driven in rotation.
  • the bearing is rotatably mounted in the end of the head of the cylinder or in an element fast to the latter by means for example of bearings whilst a rotary drive device is provided to directly rotate said bearing.
  • the latter is advantageously rotatably mounted by means for example, of a roller bearing system at the end of the rod so that the latter does not drive said piston in its rotary movement.
  • the rotary drive device is, for example, constituted by a rack or by an endless screw which cooperates with a conjugate toothing formed on the cylinder or the member to which it is fast or respectively the bearing, the rack being, for example, actuated by a jack.
  • the invention is adaptable to conventional already-existing jacks.
  • FIG. 1 is a diagrammatic longitudinal section of an embodiment of a jack according to the invention
  • FIG. 2 is a diagrammatic longitudinal section of another embodiment of a jack according to the invention.
  • FIG. 3 is a section along the line III--III of the FIG. 2.
  • FIG. 1 shows a first embodiment of a jack according to the invention which comprises a cylinder 1, a rod 2 and a piston 3.
  • the piston 3 of circular section is slideably mounted in the cylinder 1 by means of a fluid-tight seal 4.
  • the head end of the cylinder 1 has a bearing 5 which is fixed by means of a threaded rod 6 and a nut to a support 7 arranded in fluid-tight manner at the other end of the cylinder, so that the cylinder 1, the bearing 5 and the support 7 form one unit.
  • the rod 2 is slideably mounted in fluid-tight manner in the bearing 5.
  • Said rod has a substantially curvilinear polygonal section such as that shown in FIG. 3, whilst the bearing 5 has a corresponding bore. It is hence clear that the bearing 5 and the rod 2 are fast in rotation.
  • the support 7 is fixed, for example, by means of the bolt 8, to a pinion 9.
  • the latter is rotatably mounted, by means of ball-bearings 10 in a fixed base 11.
  • a rack 12 is tangentially mounted to the pinion 9 so as to be able to drive it.
  • Said rack 12 is, for example, actuated by a jack as in the embodiment shown in FIGS. 2 and 3.
  • the operation is clear.
  • the piston 3 is driven in translation by a conventional device (not shown) with a pressurizing agent.
  • the rack 12 causes the pinion 9 to rotate, the latter drives in rotation the support 7, the cylinder 1 and the bearing 5 and hence consequently the rod 2.
  • the free end of the rod 2 can be fastened to an arm (not shown) mounted perpendicularly whose end can then reach any of the points of the surface of a cylinder of radius equal to the length of said arm and of height equal to the length of the stroke of the rod.
  • FIGS. 2 and 3 show another embodiment in which the jack includes a cylinder 21 of circular section, a rod 22 and a piston 23.
  • the latter is slideably mounted in fluid-tight manner in the cylinder 21 by means of fluid-tight seals 24.
  • the head end of the cylinder has also a bearing 25.
  • this bearing is rotatably mounted by means of ball-bearings 26 in an element or head 27, which is fixed through a coupling 28 to a base 29 by means of a threaded rod with a nut 30.
  • Said base 29 is arranged at the other end of the cylinder and closes the latter in sealed manner. It is clear that the head 27, the cylinder 21 and the base 29 form one unit.
  • the base 29 and the coupling 28 have in addition passages respectively 31 and 32 for intake and/or the exit of a pressurizing agent.
  • the rod 22 is slideably mounted in fluid-tight manner in the bearing 25, whilst they both have substantially conjugated curvilinear polygonal sections, here substantially triangular.
  • the piston 23 is rotatably mounted at the end of the rod 22 by means of bearing 33.
  • the bearing 25 has a peripheral toothing 34 designed to cooperate with rack 35 mounted tangentially to said bearing.
  • the rack is driven by a jack 36 arranged parallel to said rack and whose rod is made fast to the end of the rack by means of a bracket 37.
  • This embodiment enables as with the preceding embodiment described, the combination of a translational movement and a rotational movement.
  • the rotary drive device may be any other and notably constituted by an endless screw.
  • the invention can be applied to any sort of jack and it is not limited to the jacks with a piston and pressurizing agent which have been more particularly described.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
US05/906,885 1977-05-20 1978-05-17 Jack with translation and rotation movements Expired - Lifetime US4186911A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7715599A FR2391383A1 (fr) 1977-05-20 1977-05-20 Verin a mouvements de translation et de rotation
FR7715599 1977-05-20

Publications (1)

Publication Number Publication Date
US4186911A true US4186911A (en) 1980-02-05

Family

ID=9191134

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/906,885 Expired - Lifetime US4186911A (en) 1977-05-20 1978-05-17 Jack with translation and rotation movements

Country Status (4)

Country Link
US (1) US4186911A (de)
DE (1) DE2821635C2 (de)
FR (1) FR2391383A1 (de)
GB (1) GB1587367A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489640A (en) * 1983-02-28 1984-12-25 American Standard Inc. Door operating apparatus
US4493245A (en) * 1983-04-22 1985-01-15 Rimrock Corporation Rotary and linear actuating device
US4646768A (en) * 1983-07-18 1987-03-03 Mitsubishi Jukogyo Kabushiki Kaisha Extendable and retractable cleaning apparatus
US5117739A (en) * 1990-10-15 1992-06-02 C & C Manufacturing, Inc. Fluid driven multi-axis apparatus
US5410944A (en) * 1993-06-03 1995-05-02 Cushman; William B. Telescoping robot arm with spherical joints
US20130117998A1 (en) * 2011-11-12 2013-05-16 Philip Merryman Telescoping Tower of Wind Turbine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3047980C2 (de) * 1980-12-19 1984-10-31 Dienes Werke für Maschinenteile GmbH & Co KG, 5063 Overath Druckmittelbetätigter Messerhalter für Rollenschneidmaschinen
US5524868A (en) * 1993-08-26 1996-06-11 Templeton, Kenly & Co., Inc. Hydraulic toe jack
FR2823540B1 (fr) 2001-04-12 2005-09-30 Hispano Suiza Sa Verin a deplacement rectiligne et rotatif
DE102012208475A1 (de) * 2012-05-21 2013-11-21 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Handhabungseinheit zum Umpositionieren von Teilen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US904919A (en) * 1906-03-15 1908-11-24 George P Baldwin Transfer-truck.
US3089680A (en) * 1960-08-22 1963-05-14 Deve Vagn Shifting jack
US3135165A (en) * 1962-07-26 1964-06-02 Fiat Spa Hydro-mechanical lifting jack
US3815479A (en) * 1972-01-20 1974-06-11 Phd Inc Compound motion fluid actuator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US904919A (en) * 1906-03-15 1908-11-24 George P Baldwin Transfer-truck.
US3089680A (en) * 1960-08-22 1963-05-14 Deve Vagn Shifting jack
US3135165A (en) * 1962-07-26 1964-06-02 Fiat Spa Hydro-mechanical lifting jack
US3815479A (en) * 1972-01-20 1974-06-11 Phd Inc Compound motion fluid actuator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489640A (en) * 1983-02-28 1984-12-25 American Standard Inc. Door operating apparatus
US4493245A (en) * 1983-04-22 1985-01-15 Rimrock Corporation Rotary and linear actuating device
US4646768A (en) * 1983-07-18 1987-03-03 Mitsubishi Jukogyo Kabushiki Kaisha Extendable and retractable cleaning apparatus
US5117739A (en) * 1990-10-15 1992-06-02 C & C Manufacturing, Inc. Fluid driven multi-axis apparatus
US5410944A (en) * 1993-06-03 1995-05-02 Cushman; William B. Telescoping robot arm with spherical joints
US20130117998A1 (en) * 2011-11-12 2013-05-16 Philip Merryman Telescoping Tower of Wind Turbine

Also Published As

Publication number Publication date
FR2391383A1 (fr) 1978-12-15
GB1587367A (en) 1981-04-01
DE2821635A1 (de) 1978-11-30
FR2391383B1 (de) 1980-10-17
DE2821635C2 (de) 1985-09-12

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